Michigan Pension Tax Changes Are Reshaping Withdrawal Strategy for Retirees in 2026

You have been careful with your money for decades. You built a qualified account, maybe a pension, maybe a 401(k), maybe both. And now, just as you need that money to work for you, the rules are changing in ways your plan probably has not caught up with yet.

Michigan's retirement tax laws are in the middle of the most significant rollback in more than a decade. If your withdrawal strategy has not been updated to reflect these michigan pension tax changes, you are likely leaving real money on the table. Not because you did something wrong. Because almost nobody is telling you this is happening.

What Public Act 4 of 2023 Actually Does

In March 2023, Michigan Governor Whitmer signed Public Act 4 of 2023, also called the "Lowering MI Costs Plan." It phases out the three-tier limits that have restricted Michigan's retirement income subtraction since 2012 (what many people call the "pension tax").

According to Michigan ORS and Michigan Treasury guidance, the rollback works like this. In 2025, retirees born between 1946 and 1966 can deduct up to 75 percent of the maximum allowable amount. That means up to $49,422 if you file as a single filer, or up to $98,845 if you file jointly. Then in 2026, the phase-in reaches 100 percent. Every retiree, regardless of birth year, can deduct up to $67,610 as a single filer or up to $135,220 filing jointly.

That is the cap, not a blanket exemption. Retirement income above the deduction threshold is still taxed at Michigan's flat state rate of 4.25 percent. But for many Michigan retirees, the amount of retirement income that falls below that threshold has just grown significantly.

The math on your withdrawal plan changed. The question is whether your plan knows it.

The Five-Year Blind Spot Is Already Closing

Here is the pattern we see in our office. Someone retires. They feel good. They have a plan, or at least a starting point. They spend the first couple of years getting used to the new rhythm. And then, somewhere around year three or four, they realize the critical planning window has mostly passed.

That window is what we call the Five-Year Blind Spot. The years right after you retire, before Social Security and Required Minimum Distributions begin in full, are often the cheapest tax environment of your retirement. Your ordinary income is lower. Your bracket is lower. And now, with the PA 4 of 2023 phase-in underway, more of your Michigan retirement income qualifies for the deduction.

If you use this window to pull strategically from qualified accounts, or to execute a structured Roth conversion, you pay less per dollar at both the state and federal level. If you wait until RMDs force you to take money at a fixed schedule, you lose the choice. The window closes, and it does not reopen.

Michigan does not tax Social Security benefits at all, per Michigan Treasury guidance. But your federal tax treatment and your Medicare IRMAA brackets are still very much in play. That is why even a state-level change like this one ripples through the whole plan.

What a Haphazard Withdrawal Costs You Now

Many people take income from whatever account is most convenient. They pull from a traditional IRA, or they spend down savings while leaving the 401(k) untouched. Nobody told them the order matters.

Here is what that haphazard withdrawal can cost in 2026. A Michigan couple filing jointly who pulls qualified income above $135,220 still owes 4.25 percent in Michigan tax on every dollar above that line. If they had structured their withdrawals to stay within the deduction cap, even partially, they would keep more. If they had used some of those dollars to fund a Roth conversion, that money comes out tax-free at the state and federal level for the rest of their lives.

The haphazard approach also ignores the IRMAA cliffs at the federal level. Cross a Medicare income threshold by even one dollar and your Part B and Part D premiums jump for the entire year, for each spouse. A withdrawal order that feels simple on the surface can quietly trigger a premium surcharge that wipes out months of income.

Think of your qualified account as Uncle Sam's retirement plan. He set the rules, he set the timing through RMDs, and he set the tax treatment. A Roth or non-qualified account is your plan. Completely off his radar. The PA 4 of 2023 phase-in is a rare moment when the state is actually reducing the cost of moving money from his column to yours. That opportunity does not last.

How the Phase-In Changes the Roth Conversion Calculation

Structured Roth conversions have always made sense for Michigan retirees who retire before Social Security and RMDs begin. The PA 4 of 2023 rollback adds another variable to that calculation.

In a Roth conversion, you move money from a traditional IRA or 401(k) into a Roth IRA, pay the tax now, and let the money grow and come out tax-free later. The goal is to do this during years when your bracket is low, your Michigan deduction is high, and before RMDs lock you into a fixed schedule.

With the 2026 deduction maximums now confirmed at $67,610 single and $135,220 joint, Michigan retirees have a clearer picture of how much qualified income they can take this year before the state tax kicks in fully. That number interacts directly with how much you convert, when you convert, and which account pays the tax.

This is not a simple calculation. It requires knowing your federal bracket, your projected Social Security income, your current qualified account balances, your IRMAA exposure, and the Roth five-year rule. Getting one piece wrong can trigger costs that dwarf the savings. But getting it right, with a structured, multi-year plan, is one of the most meaningful tax decisions a Michigan retiree can make right now.

Over 90 percent of the people who come into our office are carrying avoidable risk in their plans, according to our own Gap Analysis findings. Portfolios often carry 50 to 600 percent more risk than the client's measured tolerance. The withdrawal sequencing problem is a different kind of risk, but it is just as real and just as correctable.

See If Your Withdrawal Plan Reflects the New Michigan Math

The 2026 phase-in is the final step in the PA 4 of 2023 rollback. This is the moment to review how your income is sequenced, whether a Roth conversion makes sense before RMDs begin, and whether your current advisor has actually updated the math for Michigan.

Edward (WMS, IRMAA Certified Planner, National Social Security Advisor) and Krisstin (RICP, IRMAA Certified Planner, National Social Security Advisor) work specifically with Michigan retirees on exactly this kind of withdrawal sequencing and conversion planning. A Discovery Session is where we look at your current plan against the new deduction landscape and show you where the gaps are. No pressure, no prescription. Just a clear picture of what the numbers actually say.

Book a Discovery Session: https://nh-rs.com/book